2 June 2014 High spatial resolution OFDR based on broadened optical frequency sweeping by four-wave-mixing
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Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91576J (2014) https://doi.org/10.1117/12.2059470
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain
Abstract
We demonstrate a method for high spatial resolution optical frequency domain reflectometry (OFDR) by utilizing degenerated four-wave-mixing (FWM) for broadening the frequency sweeping. High order sideband is obtained from an optical comb and is consequently utilized as the pump for the FWM. An idler wavelength is produced after the FWM and 21-times broadened optical frequency sweeping is achieved compared with the radio frequency (RF) sweeping. 0.75-cm spatial resolution is obtained with RF frequency sweeping span of 638.4 MHz.
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Dan Xu, Dan Xu, Jiangbing Du, Jiangbing Du, Xinyu Fan, Xinyu Fan, Qingwen Liu, Qingwen Liu, Zuyuan He, Zuyuan He, } "High spatial resolution OFDR based on broadened optical frequency sweeping by four-wave-mixing", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91576J (2 June 2014); doi: 10.1117/12.2059470; https://doi.org/10.1117/12.2059470
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